Vacuum Interrupter

No.

Item

Unit

Value

1

Rated voltage

Kv

12

40.5

72.5

126

2

Rated current

A

630

2500

2500

2000

3

Rated frequency

Hz

50

80

50

50

4

Short time power frequency withstand voltage(1min)

kV

42

118

160

230

5

Lightning impulse withstand voltage

kV

75

215

380

550

6

Rated short circuit breaking current

kA

20

31.5

31.5

40

7

Rated peak withstand current

kA

50

80

80

100

8

Rated short circuit making current

Ka

50

80

80

100

9

Rated short time withstand current

kA

20

31.5

31.5

40

10

Rated duration of short circuit

S

4

4

4

4

11

Switching operations of rated short circuit switching current

Times

30

30

20

30

12

Mechanical life

Times

10000

10000

10000

10000

13

Closing force due to bellow and atmosphere

N

80±30

150±50

300±50

300±50

14

Force required to hold contacts open at full stroke

N

150±50

250±50

420±100

550±100

15

Time-limited circuit resistance at rated compressive force

μΩ

≤30

≤80

≤100

≤60

16

Contact limit erosion

Mm

3

3

4

4

17

Gas pressure inside vacuum interrupter

Pa

≤1.33×10-3

18

Weight of moving parts

Kg

0.52

2.5

7.5

11.5

19

Weight of vacuum interrupter

Kg

1.60

8.28

19.5

26